HYBRID CONTROL SYSTEM, Diagnostic DTC:P3110-223

DTC Code DTC Name
P3110-223 HV Main Relay

DESCRIPTION

The power management control ECU monitors the IGCT relay and detects the following malfunction.

DTC No. INF Code DTC Detection Condition Trouble Area
P3110 223 There is a short to +B in the IGCT relay or the IGCT relay is stuck closed.

  • Wire harness or connector

  • IGCT relay

  • Power management control ECU

WIRING DIAGRAM

A0004KXE10

CAUTION / NOTICE / HINT

Tech Tips

If the auxiliary battery voltage is applied to terminal +B1 or +B2 of the power management control ECU, even though the power switch is off, the circuit is shorted to +B.

PROCEDURE


  1. INSPECT RELAY (IGCT)


    1. Remove the IGCT relay from the No. 2 engine room relay block.

    2. A0004PBE01
      Text in Illustration
      *1 IGCT Relay

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher

    3. Install the IGCT relay.


    NG

    REPLACE RELAY (IGCT)

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO.2 ENGINE ROOM RELAY BLOCK)


    1. Remove the IGCT relay from the No. 2 engine room relay block.

    2. Disconnect the A31 and A33 power management control ECU connectors.

    3. Measure the voltage according to the value(s) in the table below.

      A00072VE02
      Text in Illustration
      *1 No. 2 Engine Room Relay Block *2 IGCT Relay
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      		 - -
      Standard Voltage
      Tester Connection Condition Specified Condition
      A33-5 (+B1), A31-2 (+B2) or 5 (IGCT relay) - Body ground Power switch off Below 1 V

    4. Install the IGCT relay.

    5. Reconnect the A31 and A33 power management control ECU connectors.


    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR